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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2008-2010 Digital Enterprise Research Institute (DERI)</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * you may not use this file except in compliance with the License.</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * You may obtain a copy of the License at</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *     <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> org.sindice.rdfcommons.jena;
<a name="18" href="#18">18</a>  
<a name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.datatypes.RDFDatatype;
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.datatypes.xsd.XSDDatatype;
<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.graph.Node;
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.graph.TripleMatch;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.rdf.model.AnonId;
<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.rdf.model.Model;
<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.rdf.model.ModelFactory;
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.rdf.model.Statement;
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> com.hp.hpl.jena.rdf.model.StmtIterator;
<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.sindice.rdfcommons.model.Triple;
<a name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.sindice.rdfcommons.model.TripleBuffer;
<a name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.sindice.rdfcommons.model.TripleSet;
<a name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.sindice.rdfcommons.storage.TripleStorageFilter;
<a name="32" href="#32">32</a>  
<a name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> java.io.OutputStream;
<a name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> java.util.Date;
<a name="35" href="#35">35</a>  
<a name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> <strong class="jxr_keyword">static</strong> org.sindice.rdfcommons.model.Triple.*;
<a name="37" href="#37">37</a>  
<a name="38" href="#38">38</a>  <em class="jxr_javadoccomment">/**</em>
<a name="39" href="#39">39</a>  <em class="jxr_javadoccomment"> * Utility functions to convert data from &lt;i&gt;jena&lt;/i&gt; domain to</em>
<a name="40" href="#40">40</a>  <em class="jxr_javadoccomment"> * &lt;i&gt;sindice.rdfcommons&lt;/i&gt; domain.</em>
<a name="41" href="#41">41</a>  <em class="jxr_javadoccomment"> *</em>
<a name="42" href="#42">42</a>  <em class="jxr_javadoccomment"> * @author Michele Mostarda ( mostarda@fbk.eu )</em>
<a name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * @version $Id: JenaConversionUtil.java 24 2010-12-01 23:47:33Z michele.mostarda $</em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> */</em>
<a name="45" href="#45">45</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/sindice/rdfcommons/jena/JenaConversionUtil.html">JenaConversionUtil</a> {
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>      <strong class="jxr_keyword">private</strong> <a href="../../../../org/sindice/rdfcommons/jena/JenaConversionUtil.html">JenaConversionUtil</a>() {}
<a name="48" href="#48">48</a>  
<a name="49" href="#49">49</a>      <em class="jxr_javadoccomment">/**</em>
<a name="50" href="#50">50</a>  <em class="jxr_javadoccomment">     * Converts a &lt;i&gt;Jena&lt;/i&gt; triple in a {@link org.sindice.rdfcommons.model.Triple}.</em>
<a name="51" href="#51">51</a>  <em class="jxr_javadoccomment">     *</em>
<a name="52" href="#52">52</a>  <em class="jxr_javadoccomment">     * @param triple Jena triple to convert.</em>
<a name="53" href="#53">53</a>  <em class="jxr_javadoccomment">     * @return the equivalent {@link org.sindice.rdfcommons.model.Triple}.</em>
<a name="54" href="#54">54</a>  <em class="jxr_javadoccomment">     */</em>
<a name="55" href="#55">55</a>      @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)
<a name="56" href="#56">56</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../org/sindice/rdfcommons/model/Triple.html">Triple</a> convertJenaTripleToTriple(com.hp.hpl.jena.graph.Triple triple) {
<a name="57" href="#57">57</a>          <strong class="jxr_keyword">final</strong> Node subject = triple.getSubject();
<a name="58" href="#58">58</a>          <strong class="jxr_keyword">final</strong> Node object  = triple.getObject();
<a name="59" href="#59">59</a>  
<a name="60" href="#60">60</a>          <strong class="jxr_keyword">final</strong> String subjectStr;
<a name="61" href="#61">61</a>          <strong class="jxr_keyword">if</strong>(subject.isURI()) {
<a name="62" href="#62">62</a>              subjectStr = subject.getURI();
<a name="63" href="#63">63</a>          } <strong class="jxr_keyword">else</strong> {
<a name="64" href="#64">64</a>              subjectStr = subject.getBlankNodeLabel();
<a name="65" href="#65">65</a>          }
<a name="66" href="#66">66</a>  
<a name="67" href="#67">67</a>          <strong class="jxr_keyword">final</strong> Object objectValue;
<a name="68" href="#68">68</a>          <strong class="jxr_keyword">if</strong>(object.isURI()) {
<a name="69" href="#69">69</a>              objectValue = object.getURI();
<a name="70" href="#70">70</a>          } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong>(object.isBlank()) {
<a name="71" href="#71">71</a>              objectValue = object.getBlankNodeLabel();
<a name="72" href="#72">72</a>          } <strong class="jxr_keyword">else</strong> {
<a name="73" href="#73">73</a>              objectValue = object.getLiteralValue();
<a name="74" href="#74">74</a>          }
<a name="75" href="#75">75</a>  
<a name="76" href="#76">76</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/model/Triple.html">Triple</a>(
<a name="77" href="#77">77</a>                  subjectStr,
<a name="78" href="#78">78</a>                  triple.getPredicate().getURI(),
<a name="79" href="#79">79</a>                  objectValue,
<a name="80" href="#80">80</a>                  subject.isBlank() ? SubjectType.bnode : SubjectType.uri,
<a name="81" href="#81">81</a>                  getObjectType(object)
<a name="82" href="#82">82</a>          );
<a name="83" href="#83">83</a>      }
<a name="84" href="#84">84</a>  
<a name="85" href="#85">85</a>      <em class="jxr_javadoccomment">/**</em>
<a name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     * Converts a {@link org.sindice.rdfcommons.model.TripleSet} to a list of &lt;i&gt;Jena&lt;/i&gt; triples.</em>
<a name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     *</em>
<a name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * @param tripleSet input triple set.</em>
<a name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * @return list of converted Jena triples.</em>
<a name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     */</em>
<a name="91" href="#91">91</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> com.hp.hpl.jena.graph.Triple[] convertToJenaTriples(<a href="../../../../org/sindice/rdfcommons/model/TripleSet.html">TripleSet</a> tripleSet) {
<a name="92" href="#92">92</a>          com.hp.hpl.jena.graph.Triple[] result = <strong class="jxr_keyword">new</strong> com.hp.hpl.jena.graph.Triple[ tripleSet.getSize() ];
<a name="93" href="#93">93</a>          <strong class="jxr_keyword">int</strong> i = 0;
<a name="94" href="#94">94</a>          <strong class="jxr_keyword">for</strong>(<a href="../../../../org/sindice/rdfcommons/model/Triple.html">Triple</a> triple : tripleSet) {
<a name="95" href="#95">95</a>              result[i] = <strong class="jxr_keyword">new</strong> com.hp.hpl.jena.graph.Triple(
<a name="96" href="#96">96</a>                  createSubjectNode(triple),
<a name="97" href="#97">97</a>                  Node.createURI( triple.getPredicate() ),
<a name="98" href="#98">98</a>                  createObjectNode(triple)
<a name="99" href="#99">99</a>              );
<a name="100" href="#100">100</a>             i++;
<a name="101" href="#101">101</a>         }
<a name="102" href="#102">102</a>         <strong class="jxr_keyword">return</strong> result;
<a name="103" href="#103">103</a>     }
<a name="104" href="#104">104</a> 
<a name="105" href="#105">105</a>     <em class="jxr_javadoccomment">/**</em>
<a name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * Converts a &lt;i&gt;Jena&lt;/i&gt; model in a {@link org.sindice.rdfcommons.model.TripleSet}.</em>
<a name="107" href="#107">107</a> <em class="jxr_javadoccomment">     *</em>
<a name="108" href="#108">108</a> <em class="jxr_javadoccomment">     * @param model input model.</em>
<a name="109" href="#109">109</a> <em class="jxr_javadoccomment">     * @return generated triple set.</em>
<a name="110" href="#110">110</a> <em class="jxr_javadoccomment">     */</em>
<a name="111" href="#111">111</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../org/sindice/rdfcommons/model/TripleSet.html">TripleSet</a> convertJenaModelToTripleSet(com.hp.hpl.jena.rdf.model.Model model) {
<a name="112" href="#112">112</a>         StmtIterator iter = model.listStatements();
<a name="113" href="#113">113</a>         <a href="../../../../org/sindice/rdfcommons/model/TripleSet.html">TripleSet</a> result = <strong class="jxr_keyword">new</strong> <a href="../../../../org/sindice/rdfcommons/model/TripleBuffer.html">TripleBuffer</a>();
<a name="114" href="#114">114</a>         <strong class="jxr_keyword">while</strong>(iter.hasNext()) {
<a name="115" href="#115">115</a>             Statement statement = iter.nextStatement();
<a name="116" href="#116">116</a>             result.addTriple( convertJenaTripleToTriple( statement.asTriple() ) );
<a name="117" href="#117">117</a>         }
<a name="118" href="#118">118</a>         <strong class="jxr_keyword">return</strong> result;
<a name="119" href="#119">119</a>     }
<a name="120" href="#120">120</a> 
<a name="121" href="#121">121</a>     <em class="jxr_javadoccomment">/**</em>
<a name="122" href="#122">122</a> <em class="jxr_javadoccomment">     * Converts a {@link org.sindice.rdfcommons.model.TripleSet} to a Jena {@link com.hp.hpl.jena.rdf.model.Model}.</em>
<a name="123" href="#123">123</a> <em class="jxr_javadoccomment">     *</em>
<a name="124" href="#124">124</a> <em class="jxr_javadoccomment">     * @param ts triple set.</em>
<a name="125" href="#125">125</a> <em class="jxr_javadoccomment">     * @return generated model.</em>
<a name="126" href="#126">126</a> <em class="jxr_javadoccomment">     */</em>
<a name="127" href="#127">127</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> com.hp.hpl.jena.rdf.model.Model convertTripleSetToJenaModel(<a href="../../../../org/sindice/rdfcommons/model/TripleSet.html">TripleSet</a> ts) {
<a name="128" href="#128">128</a>         Model model = ModelFactory.createDefaultModel();
<a name="129" href="#129">129</a>         <strong class="jxr_keyword">for</strong>(<a href="../../../../org/sindice/rdfcommons/model/Triple.html">Triple</a> t : ts) {
<a name="130" href="#130">130</a>             com.hp.hpl.jena.rdf.model.Resource subject;
<a name="131" href="#131">131</a>             <strong class="jxr_keyword">if</strong>( t.isSubjectBNode() ) {
<a name="132" href="#132">132</a>                 subject = model.createResource(AnonId.create( t.getSubject() ) );
<a name="133" href="#133">133</a>             } <strong class="jxr_keyword">else</strong> {
<a name="134" href="#134">134</a>                 subject = model.createResource( t.getSubject() );
<a name="135" href="#135">135</a>             }
<a name="136" href="#136">136</a> 
<a name="137" href="#137">137</a>             com.hp.hpl.jena.rdf.model.Property predicate = model.createProperty( t.getPredicate() );
<a name="138" href="#138">138</a> 
<a name="139" href="#139">139</a>             com.hp.hpl.jena.rdf.model.RDFNode object;
<a name="140" href="#140">140</a>             <strong class="jxr_keyword">if</strong>( t.isObjectBNode() ) {
<a name="141" href="#141">141</a>                 object = model.createResource(AnonId.create( t.getObjectAsString() ) );
<a name="142" href="#142">142</a>             } <strong class="jxr_keyword">else</strong> {
<a name="143" href="#143">143</a>                 <strong class="jxr_keyword">if</strong>(t.isObjLiteral()) {
<a name="144" href="#144">144</a>                     object = model.createTypedLiteral( t.getObject() );
<a name="145" href="#145">145</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="146" href="#146">146</a>                     object = model.createResource( t.getObjectAsString() );
<a name="147" href="#147">147</a>                 }
<a name="148" href="#148">148</a>             }
<a name="149" href="#149">149</a> 
<a name="150" href="#150">150</a>             model.add(subject, predicate, object);
<a name="151" href="#151">151</a>         }
<a name="152" href="#152">152</a>         <strong class="jxr_keyword">return</strong> model;
<a name="153" href="#153">153</a>     }
<a name="154" href="#154">154</a> 
<a name="155" href="#155">155</a>     <em class="jxr_javadoccomment">/**</em>
<a name="156" href="#156">156</a> <em class="jxr_javadoccomment">     * Creates an appropriate &lt;i&gt;Jena&lt;/i&gt; node representing the subject of the given triple.</em>
<a name="157" href="#157">157</a> <em class="jxr_javadoccomment">     *</em>
<a name="158" href="#158">158</a> <em class="jxr_javadoccomment">     * @param triple input triple.</em>
<a name="159" href="#159">159</a> <em class="jxr_javadoccomment">     * @return subject nodel.</em>
<a name="160" href="#160">160</a> <em class="jxr_javadoccomment">     */</em>
<a name="161" href="#161">161</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> com.hp.hpl.jena.graph.Node createSubjectNode(<a href="../../../../org/sindice/rdfcommons/model/Triple.html">Triple</a> triple) {
<a name="162" href="#162">162</a>         <strong class="jxr_keyword">return</strong>
<a name="163" href="#163">163</a>                 triple.isSubjectBNode()
<a name="164" href="#164">164</a>                         ?
<a name="165" href="#165">165</a>                 Node.createAnon( AnonId.create(triple.getSubject()) ) : Node.createURI( triple.getSubject() );
<a name="166" href="#166">166</a>     }
<a name="167" href="#167">167</a> 
<a name="168" href="#168">168</a>     <em class="jxr_javadoccomment">/**</em>
<a name="169" href="#169">169</a> <em class="jxr_javadoccomment">     * Creates an appropriate &lt;i&gt;Jena&lt;/i&gt; node representing the object of the given triple.</em>
<a name="170" href="#170">170</a> <em class="jxr_javadoccomment">     *</em>
<a name="171" href="#171">171</a> <em class="jxr_javadoccomment">     * @param triple input triple.</em>
<a name="172" href="#172">172</a> <em class="jxr_javadoccomment">     * @return object nodel.</em>
<a name="173" href="#173">173</a> <em class="jxr_javadoccomment">     */</em>
<a name="174" href="#174">174</a> 
<a name="175" href="#175">175</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> com.hp.hpl.jena.graph.Node createObjectNode(<a href="../../../../org/sindice/rdfcommons/model/Triple.html">Triple</a> triple) {
<a name="176" href="#176">176</a>         <strong class="jxr_keyword">if</strong>(triple.isObjLiteral()) {
<a name="177" href="#177">177</a>             <strong class="jxr_keyword">return</strong> Node.createLiteral( triple.getObject().toString(), <strong class="jxr_keyword">null</strong>, getRDFDatatype(triple.getObject()) );
<a name="178" href="#178">178</a>         }
<a name="179" href="#179">179</a>         <strong class="jxr_keyword">if</strong>(triple.isObjectBNode()) {
<a name="180" href="#180">180</a>             <strong class="jxr_keyword">return</strong> Node.createAnon(AnonId.create( triple.getObjectAsString() ) );
<a name="181" href="#181">181</a>         }
<a name="182" href="#182">182</a>         <strong class="jxr_keyword">return</strong> Node.createURI( triple.getObjectAsString() );
<a name="183" href="#183">183</a>     }
<a name="184" href="#184">184</a> 
<a name="185" href="#185">185</a>     <em class="jxr_javadoccomment">/**</em>
<a name="186" href="#186">186</a> <em class="jxr_javadoccomment">     * converts a {@link org.sindice.rdfcommons.storage.TripleStorageFilter} in a Jena &lt;i&gt;TripleMatch&lt;/i&gt;.</em>
<a name="187" href="#187">187</a> <em class="jxr_javadoccomment">     *</em>
<a name="188" href="#188">188</a> <em class="jxr_javadoccomment">     * @param filter input filter.</em>
<a name="189" href="#189">189</a> <em class="jxr_javadoccomment">     * @return generated triple match.</em>
<a name="190" href="#190">190</a> <em class="jxr_javadoccomment">     */</em>
<a name="191" href="#191">191</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> com.hp.hpl.jena.graph.TripleMatch convertToJenaTripleMatch(<strong class="jxr_keyword">final</strong> <a href="../../../../org/sindice/rdfcommons/storage/TripleStorageFilter.html">TripleStorageFilter</a> filter) {
<a name="192" href="#192">192</a>         <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> TripleMatch() {
<a name="193" href="#193">193</a> 
<a name="194" href="#194">194</a>             <strong class="jxr_keyword">public</strong> Node getMatchSubject() {
<a name="195" href="#195">195</a>                 <strong class="jxr_keyword">final</strong> String subjectMatch = filter.getSubjectMatching();
<a name="196" href="#196">196</a>                 <strong class="jxr_keyword">if</strong>( filter.requireSubjectBlank() ) {
<a name="197" href="#197">197</a>                     <strong class="jxr_keyword">return</strong>
<a name="198" href="#198">198</a>                             subjectMatch == <strong class="jxr_keyword">null</strong>
<a name="199" href="#199">199</a>                                     ?
<a name="200" href="#200">200</a>                             Node.createAnon()
<a name="201" href="#201">201</a>                                     :
<a name="202" href="#202">202</a>                             Node.createAnon( AnonId.create(subjectMatch) );
<a name="203" href="#203">203</a>                 }
<a name="204" href="#204">204</a>                 <strong class="jxr_keyword">return</strong> subjectMatch == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">null</strong> : Node.createURI(subjectMatch);
<a name="205" href="#205">205</a>             }
<a name="206" href="#206">206</a> 
<a name="207" href="#207">207</a>             <strong class="jxr_keyword">public</strong> Node getMatchPredicate() {
<a name="208" href="#208">208</a>                 <strong class="jxr_keyword">final</strong> String predicateMatch = filter.getPredicateMatching();
<a name="209" href="#209">209</a>                 <strong class="jxr_keyword">return</strong> predicateMatch == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">null</strong> : Node.createURI(predicateMatch);
<a name="210" href="#210">210</a>             }
<a name="211" href="#211">211</a> 
<a name="212" href="#212">212</a>             <strong class="jxr_keyword">public</strong> Node getMatchObject() {
<a name="213" href="#213">213</a>                 <strong class="jxr_keyword">final</strong> Object objectMatch = filter.getObjectMatching();
<a name="214" href="#214">214</a>                 <strong class="jxr_keyword">if</strong>( filter.requireObjectBlank() ) {
<a name="215" href="#215">215</a>                     <strong class="jxr_keyword">return</strong>
<a name="216" href="#216">216</a>                             objectMatch == <strong class="jxr_keyword">null</strong>
<a name="217" href="#217">217</a>                                 ?
<a name="218" href="#218">218</a>                             Node.createAnon()
<a name="219" href="#219">219</a>                                 :
<a name="220" href="#220">220</a>                             Node.createAnon( AnonId.create(objectMatch.toString()) );
<a name="221" href="#221">221</a>                 }
<a name="222" href="#222">222</a>                 <strong class="jxr_keyword">return</strong> filter.requireLiteral()
<a name="223" href="#223">223</a>                     ?
<a name="224" href="#224">224</a>                     objectMatch == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">null</strong> : Node.createLiteral(
<a name="225" href="#225">225</a>                             objectMatch.toString(),
<a name="226" href="#226">226</a>                             <strong class="jxr_keyword">null</strong>,
<a name="227" href="#227">227</a>                             getRDFDatatype(objectMatch)
<a name="228" href="#228">228</a>                     )
<a name="229" href="#229">229</a>                     :
<a name="230" href="#230">230</a>                     objectMatch == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">null</strong> : Node.createURI( objectMatch.toString() );
<a name="231" href="#231">231</a>             }
<a name="232" href="#232">232</a> 
<a name="233" href="#233">233</a>             <strong class="jxr_keyword">public</strong> com.hp.hpl.jena.graph.Triple asTriple() {
<a name="234" href="#234">234</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> com.hp.hpl.jena.graph.Triple( getMatchSubject(), getMatchPredicate(), getMatchObject() );
<a name="235" href="#235">235</a>             }
<a name="236" href="#236">236</a>         };
<a name="237" href="#237">237</a>     }
<a name="238" href="#238">238</a> 
<a name="239" href="#239">239</a>     <em class="jxr_javadoccomment">/**</em>
<a name="240" href="#240">240</a> <em class="jxr_javadoccomment">     * Serialzes the content of a {@link org.sindice.rdfcommons.model.TripleSet} on the given output stream.</em>
<a name="241" href="#241">241</a> <em class="jxr_javadoccomment">     *</em>
<a name="242" href="#242">242</a> <em class="jxr_javadoccomment">     * @param os</em>
<a name="243" href="#243">243</a> <em class="jxr_javadoccomment">     * @param ts</em>
<a name="244" href="#244">244</a> <em class="jxr_javadoccomment">     */</em>
<a name="245" href="#245">245</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> serializeToRDF(<a href="../../../../org/sindice/rdfcommons/model/TripleSet.html">TripleSet</a> ts, OutputStream os) {
<a name="246" href="#246">246</a>         Model model = convertTripleSetToJenaModel(ts);
<a name="247" href="#247">247</a>         model.write(os, <span class="jxr_string">"RDF/XML-ABBREV"</span>);
<a name="248" href="#248">248</a>     }
<a name="249" href="#249">249</a> 
<a name="250" href="#250">250</a>     <em class="jxr_javadoccomment">/**</em>
<a name="251" href="#251">251</a> <em class="jxr_javadoccomment">     * Converts a {@link org.sindice.rdfcommons.storage.TripleStorageFilter} in a &lt;i&gt;SPARQL Construct&lt;/i&gt; query.</em>
<a name="252" href="#252">252</a> <em class="jxr_javadoccomment">     *</em>
<a name="253" href="#253">253</a> <em class="jxr_javadoccomment">     * @param tsf</em>
<a name="254" href="#254">254</a> <em class="jxr_javadoccomment">     * @return the SPARQL query.</em>
<a name="255" href="#255">255</a> <em class="jxr_javadoccomment">     */</em>
<a name="256" href="#256">256</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String convertToSparqlConstructQuery(String graphName, <a href="../../../../org/sindice/rdfcommons/storage/TripleStorageFilter.html">TripleStorageFilter</a> tsf) {
<a name="257" href="#257">257</a>         <strong class="jxr_keyword">return</strong> String.format(
<a name="258" href="#258">258</a>                 <span class="jxr_string">"PREFIX xsd: &lt;http://www.w3.org/2001/XMLSchema#&gt; "</span> +
<a name="259" href="#259">259</a>                 <span class="jxr_string">"CONSTRUCT {%s %s %s} "</span> +
<a name="260" href="#260">260</a>                 <span class="jxr_string">"FROM &lt;%s&gt; "</span> +
<a name="261" href="#261">261</a>                 <span class="jxr_string">"WHERE {%s %s %s %s %s %s}"</span>,
<a name="262" href="#262">262</a> 
<a name="263" href="#263">263</a>                 toTerm( <span class="jxr_string">"?s"</span>, tsf.getSubjectMatching()   ),
<a name="264" href="#264">264</a>                 toTerm( <span class="jxr_string">"?p"</span>, tsf.getPredicateMatching() ),
<a name="265" href="#265">265</a>                 toObjectTerm( <span class="jxr_string">"?o"</span>, tsf.getObjectMatching() ),
<a name="266" href="#266">266</a> 
<a name="267" href="#267">267</a>                 graphName,
<a name="268" href="#268">268</a> 
<a name="269" href="#269">269</a>                 toTerm( <span class="jxr_string">"?s"</span>, tsf.getSubjectMatching()   ),
<a name="270" href="#270">270</a>                 toTerm( <span class="jxr_string">"?p"</span>, tsf.getPredicateMatching() ),
<a name="271" href="#271">271</a>                 toObjectTerm( <span class="jxr_string">"?o"</span>, tsf.getObjectMatching() ),
<a name="272" href="#272">272</a> 
<a name="273" href="#273">273</a>                 (tsf.getSubjectMatching() == <strong class="jxr_keyword">null</strong> &amp;&amp; tsf.requireSubjectBlank()) ? <span class="jxr_string">". FILTER isBlank(?s)"</span>   : <span class="jxr_string">""</span>,
<a name="274" href="#274">274</a>                 (tsf.getObjectMatching()  == <strong class="jxr_keyword">null</strong> &amp;&amp; tsf.requireObjectBlank())  ? <span class="jxr_string">". FILTER isBlank(?o)"</span>   : <span class="jxr_string">""</span>,
<a name="275" href="#275">275</a>                 (tsf.getObjectMatching()  == <strong class="jxr_keyword">null</strong> &amp;&amp; tsf.requireLiteral())      ? <span class="jxr_string">". FILTER isLiteral(?o)"</span> : <span class="jxr_string">""</span>
<a name="276" href="#276">276</a>         );
<a name="277" href="#277">277</a>     }
<a name="278" href="#278">278</a> 
<a name="279" href="#279">279</a>     <em class="jxr_javadoccomment">/**</em>
<a name="280" href="#280">280</a> <em class="jxr_javadoccomment">     * Returns the most appropriate &lt;i&gt;RDF Datatype&lt;/i&gt; for the given object.</em>
<a name="281" href="#281">281</a> <em class="jxr_javadoccomment">     *</em>
<a name="282" href="#282">282</a> <em class="jxr_javadoccomment">     * @param o input object.</em>
<a name="283" href="#283">283</a> <em class="jxr_javadoccomment">     * @return the datatype.</em>
<a name="284" href="#284">284</a> <em class="jxr_javadoccomment">     * @throws IllegalArgumentException if the object is not supported.</em>
<a name="285" href="#285">285</a> <em class="jxr_javadoccomment">     */</em>
<a name="286" href="#286">286</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> RDFDatatype getRDFDatatype(Object o) {
<a name="287" href="#287">287</a>         <strong class="jxr_keyword">if</strong>(o instanceof String) {
<a name="288" href="#288">288</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDstring;
<a name="289" href="#289">289</a>         }
<a name="290" href="#290">290</a>         <strong class="jxr_keyword">if</strong>(o instanceof Integer) {
<a name="291" href="#291">291</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDinteger;
<a name="292" href="#292">292</a>         }
<a name="293" href="#293">293</a>         <strong class="jxr_keyword">if</strong>(o instanceof Long) {
<a name="294" href="#294">294</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDlong;
<a name="295" href="#295">295</a>         }
<a name="296" href="#296">296</a>         <strong class="jxr_keyword">if</strong>(o instanceof Short) {
<a name="297" href="#297">297</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDshort;
<a name="298" href="#298">298</a>         }
<a name="299" href="#299">299</a>         <strong class="jxr_keyword">if</strong>(o instanceof Float) {
<a name="300" href="#300">300</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDfloat;
<a name="301" href="#301">301</a>         }
<a name="302" href="#302">302</a>         <strong class="jxr_keyword">if</strong>(o instanceof Double) {
<a name="303" href="#303">303</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDdouble;
<a name="304" href="#304">304</a>         }
<a name="305" href="#305">305</a>         <strong class="jxr_keyword">if</strong>(o instanceof Byte) {
<a name="306" href="#306">306</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDbyte;
<a name="307" href="#307">307</a>         }
<a name="308" href="#308">308</a>         <strong class="jxr_keyword">if</strong>(o instanceof Boolean) {
<a name="309" href="#309">309</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDboolean;
<a name="310" href="#310">310</a>         }
<a name="311" href="#311">311</a>         <strong class="jxr_keyword">if</strong>(o instanceof Character) {
<a name="312" href="#312">312</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDstring;
<a name="313" href="#313">313</a>         }
<a name="314" href="#314">314</a>         <strong class="jxr_keyword">if</strong>(o instanceof Date) {
<a name="315" href="#315">315</a>             <strong class="jxr_keyword">return</strong> XSDDatatype.XSDdateTime;
<a name="316" href="#316">316</a>         }
<a name="317" href="#317">317</a>         <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Invalid object type: "</span> + o);
<a name="318" href="#318">318</a>     }
<a name="319" href="#319">319</a> 
<a name="320" href="#320">320</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String toTerm(String <strong class="jxr_keyword">var</strong>, String in) {
<a name="321" href="#321">321</a>         <strong class="jxr_keyword">return</strong> in == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">var</strong> : String.format(<span class="jxr_string">"&lt;%s&gt;"</span>, in);
<a name="322" href="#322">322</a>     }
<a name="323" href="#323">323</a> 
<a name="324" href="#324">324</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String getRDFDatatypeFragment(Object in) {
<a name="325" href="#325">325</a>         String uri = getRDFDatatype(in).getURI();
<a name="326" href="#326">326</a>         <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> indexofFragment = uri.indexOf('#');
<a name="327" href="#327">327</a>         <strong class="jxr_keyword">if</strong>(indexofFragment == -1) {
<a name="328" href="#328">328</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException();
<a name="329" href="#329">329</a>         }
<a name="330" href="#330">330</a>         <strong class="jxr_keyword">return</strong> uri.substring( indexofFragment + 1 );
<a name="331" href="#331">331</a>     }
<a name="332" href="#332">332</a> 
<a name="333" href="#333">333</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> String toObjectTerm(String <strong class="jxr_keyword">var</strong>, Object in) {
<a name="334" href="#334">334</a>         <strong class="jxr_keyword">return</strong> in == <strong class="jxr_keyword">null</strong> ? <strong class="jxr_keyword">var</strong> : String.format(<span class="jxr_string">"\&quot;%s\&quot;^^xsd:%s"</span>, in.toString(), getRDFDatatypeFragment(in) );
<a name="335" href="#335">335</a>     }
<a name="336" href="#336">336</a> 
<a name="337" href="#337">337</a>     <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> Triple.ObjectType getObjectType(Node node) {
<a name="338" href="#338">338</a>         <strong class="jxr_keyword">if</strong>(node.isLiteral()) {
<a name="339" href="#339">339</a>             <strong class="jxr_keyword">return</strong> ObjectType.literal;
<a name="340" href="#340">340</a>         }
<a name="341" href="#341">341</a>         <strong class="jxr_keyword">if</strong>(node.isBlank()) {
<a name="342" href="#342">342</a>             <strong class="jxr_keyword">return</strong> ObjectType.bnode;
<a name="343" href="#343">343</a>         }
<a name="344" href="#344">344</a>         <strong class="jxr_keyword">return</strong> ObjectType.uri;
<a name="345" href="#345">345</a>     }
<a name="346" href="#346">346</a> 
<a name="347" href="#347">347</a> }
</pre>
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